Answer: The correct answer is -
C. before Kingdom.
Domain is a rank used for the classification of living organisms and it is placed before the Kingdom.
There are broadly three domains that include all the life forms, which are Archaea, Bacteria (includes prokaryotes), and Eukarya (which includes all eukaryotes such as belonging to the kingdom Protista, Fungi, Plantae, and Animalia) .
Thus, option c) is the right answer.